package org.staticdemo;

public class Text2 {
    public static void main(String[] args) {
        //目标：理解类变量的应用场景。

        User u1 = new User();
        User u2 = new User();
        User u3 = new User();
        User u4 = new User();
        User u5 = new User();

        System.out.println(User.number);

    }
}
